Text this: Infant male sex as a risk factor for shoulder dystocia but not for cephalopelvic disproportion: An independent or confounded effect?

  _____    _    _    __   _     ______   _____    
 /  ___|| | || | || | || | ||  /_   _// |  __ \\  
| // __   | || | || | '--' ||   -| ||-  | |  \ || 
| \\_\ || | \\_/ || | .--. ||   _| ||_  | |__/ || 
 \____//   \____//  |_|| |_||  /_____// |_____//  
  `---`     `---`   `-`  `-`   `-----`   -----`